.zoom {
    width: 200px;
    height: 200px;
    margin: 250px 0 0 250px;
    position: relative;
    border: solid 1px #000;
}

.big_area {
    width: 400px;
    height: 400px;
    position: absolute;
    left: -10000px;
    top: -1px;
    border: solid 1px #000;
    overflow: hidden;
}

.big_area img {
    position: absolute;
    left: 0;
    top: 0;
}

.mask {
    position: absolute;
    left: -10000px;
    top: 0;
    width: 100px;
    height: 100px;
    background: #000;
    opacity: 0.65;
    filter: alpha(opacity=65);
}

.pic img {
    display: block;
    float: left;
    margin: 20px 0 0 3px;
    border: 1px solid #000;
}